Next we focus on the differences between the images
SELECT LA.image-LAB.image FROM LakeUrmia LA
JOIN LakeUrmia LAB ON DAYDIFF(LA.Date,LAB.Date)==1
New satellite systems like Sentinel-1/2, Planet Labs’ Dove Program, and countless other projects aim to provide nearly real-time imaging of the entire planet.
First we select our current set of images (LakeUrmia) from the archive
SELECT image FROM TimelapseArchive WHERE Location IS "Lake Urmia"
AND Date.Year BETWEEN 1984 AND 2012
Next we focus on the differences between the images
SELECT LA.image-LAB.image FROM LakeUrmia LA
JOIN LakeUrmia LAB ON DAYDIFF(LA.Date,LAB.Date)==1
Rather than focusing only on the differences, we can utilize a model-based approach to analyze the data
\[\rightarrow \textrm{Segment different regions of the image based on land-cover}\]
SELECT Segment_Water(Image) as WaterArea FROM TimelapseArchive
\[ \downarrow \textrm{ Extract the heart since it is the most dose-sensitive} \]
SELECT HeartRegion FROM ChestSeq